I get following error:
Exception in thread "main" java.lang.NullPointerException
at org.apache.commons.io.FileUtils.innerListFiles(FileUtils.java:145)
at org.apache.commons.io.FileUtils.innerListFiles(FileUtils.java:147)
at org.apache.commons.io.FileUtils.listFiles(FileUtils.java:215)
at test.Find.main(Find.java:17)